Hot-water heater.



J. MARTENS.

HOT WATER HEATER. APPLICATION FILED JUYLY 17*,4915.

Patented Oct. 3,1916.

Z SHEET$-SHEET I Auxiliary flea Ze'l J MARTENS. HOT WATER HEATER. APPLICATION FILED JULY 17, 1915.

Patented Oct. 3,1916.

2 SHEETS-ShEET 2 170m am;

53019 fieaie no'nwh'rnn Hansen.

Patented 3 1916;

' Specification of Letters Patent. m mes filed July 17,1915. serial No. 40,493.

of Illinois,

i eiliciencyepw Other and .M ZO P Y form apart tion; Fig;

tialliy of an outer sheli- 1 which has con- ToaZZ whom) it may concern Be, it known that I Jenn MAR'I'ENS, a citizen r-Qf I the United States, residing at Chicago inithe county of Cook and State usetullmprovement in Hot-Water Heaters,

oi which-the-following is a fulh clear, con- 'cise, andexact description, referencebeing fhad-totheacoompanying drawings, forming 1. m1 of this specification. yinvention relatesto to provide. an, improved heater of inexpensive construction and of increased the burner as possible. auxiliary a1r supply- I chamber-to provide an additional amount of air and to control the draft on the burner.

In the accompanying drawings which of the present specification, Figure '1'.is a longitudinal vertical section of one form of my heater; Fig. 2 is a horizontal. section taken ingthe manner of attachment of the baflie and the channeltothe wall of the combustion chamber; Fig. 4 is a verticallongitu-1 dinal-section of another form of my invenview showing the manner in which the channel is applied to the interior ofthe heater.

The heater shown in Fig. -1 consists essen nected thereto the inlet pipe 2 adjacent the bottom, a hotwater delivery pipe 3, and a the -b0tt0m '0f"tl1e heater to drain the sameto prevent freezing: .An inner shell 6 whichiis'of..considerably less length than i the outer'shell 1 is. secured at its lower end bymeans of the flared connection -7 to the ottonf of the shell 1 to form a combustion chamber 18 within which is provided a suitable burner such as the gas burner 9, ,A plurality of holes 10 are cut in the side walls of the shells -1 and 6 to provide ainfor the burner 9, he bottom of the combustion have invented a certain new andhot water heaters further objects and advantages on the line 2, 2, of Fig. 1 Fig. 3' is a fragmentary detail view show- 5 is a'fragmentary view show ngthe vaporizer applied to the top of -.gthe heater; andcFig. 6 is an enlarged sectional as comprising chamber being closed by a cap or closure 11. The smoke or exhaust iiue 12 passes through the outer shell 1 and is securedv to the inner shell 6 at a point well'towardthe bottom of the constricted part of the combustion chamber. A heating tube 13 which may consist of oneor more lengths of tubing is con nected by a nipple 14 at the bottom of the water space between the shells 1 and 6, and

. at its upper end projects through the top of the shell 6 so as' to discharge the water. heated in the tube int'othe top of the water space and adjacent the delivery pipe 3.- An auxiliary or fresh air flue 15 is connected to theinterior of the shell 6 near the top thereof. The position of the fine 15 may be varied in its position up or down without depart ing from the invention, in order to suit c0ndition's. This "fresh air flue 15 is provided with a damper 16 so that the amount of fresh air drawn into the combustion chamber may be properly regulated. The smoke flue 12 is also provided with'a damper 17 for controlling the draft upon the burner 9.

I have found that in heaters of this type there will" be a considerable condensation or p sweating upon the interior walls of the heater when the fire is first started up; This condensation. runs down into the bot-' tom of the combustion :rnber and drips upon the burnenand is ind be very objectionable. .To obviate this I employ the channel shown on an enlarged scale in Fig.- 3, consisting of the u shaped member 18 at tached to the inside of the wall 6 and forming a suitable gutter for conducting the condensation and moisture from the wall 6 into the smoke flue 12. A suitable opening may beprovided in the bottom of the smoke flue 12 to draw out such moisture and condensation as maybe collected therein.

In, order to ginde'the products, of combustion to the top of the heating. chamber discharge of the prodpipe 4&leadir'1g-to an auxiliary heater. 1 A formed by the shell 6, I employ a suitable "rs-drain book 5 'may also be conn to bafiler In t I have Shown thls bame a plate19 which is secured at its lower end 'to the channel member 18 and 3, or secured. inany other suitable manner,' the top of said plate being V held against the side of the shell 6 by means I thus be seen that a.

of the tube 14. It can suitable passage for the products of combustion is formed up through the shell 6 and down between the plate 19 and the side of the shell 6.

In the form of the device shown in Fig.

l the plate 19 has been replaced by an inner shell 20 which is closed at the top and secured at the bottom to the channel 18. The shell 20 is apertured at the side opposite the flue 12 as shown at 21. This aperture 21 may be placed at any convenient point on that side of the shell :20, the hot air being trapped above the opening to a certain extent. The channel member 18 is cut away at 22 at the point adjacent to the smoke flue 12- so that the moisture and condensation may readily escape from the channel member 18.

It is often desirable to distil a certain amount of water for drinking purposes and for this purpose I employ a mechanism shown in Fig. 5 in connection with the heater previously described. A supple.- mental shell 22 is secured to the top of the shell 1 in any suitable manner and forms a vaporizing chamber which is in communication with the top of the water heater through a suitable float valve 23 which maintains a definite level of water in the vaporizing chamber. A suitable man-hole 24 closed by a screw-ca) 25 provides access to the interior of t e vaporizing chamber so that the same may periodically be cleaned. The delivery pipe 3 and the auxiliary connection 4 may-:pass down through a vaporizing chamber or may be connected to the side of the shell 1, as desired. A suitable vapor delivery pipe 26 which may be controlled by a valve 27 conducts the steam generated in the vaporizing chamber to a suitable worm or condenser if the water is to be distilled or to any other point if the steam or vapor is to be otherwise employed.

The float valve 23 is required in order to maintain a free steaming or vaporizing surface in the vaporizing chamber. The water within the main shell 1 being under pressure of the mains will always tend to fill. the vaporizing chamber until the same is cut off by closure of the valve 23.

I do not intend to be limited to the precise details of construction shown and described as I consider that modifications and variations will at once suggest themselves to those skilled in the art.

What I claim as new and desire to pro tect by Letters Patent-of the United States is the following:

1. In a water heater, a straight cylindrical outer shell having a closed top, a straight cylindrical inner shell forming a combustion chamber. said inner shell being also closed at its top, said shells being joined together at their lower ends to form a water space between. them at the sides and between the tops of said shells, a longitudinal heating tube having a length of pipe extending vertically, said pipe being contained in said inner shell. a burner adjacent the bottom of said shells and arranged to heat said pipe. said pipe being connected at its lower end to the lower part of said water space and having its upper endextending through the top of the inner shell to a point adjacent the top of. the outer shell. a fine extending through both of said shells near the bottom thereof and a battle contained within said inner shell and extending longitudinally thereof to a point adjacent the top of said inner shell, said baflle being interposed between the fire and said flue andclosing of? communication with said flue except over the top thereof in order to cause the product of combustion to rise above the flue over the top of the baflie and then descend to pass out of the flue.

2. In combination an outer shell having a closed top, an inner shell forming a combustion chamber, said inner shell being closed at the top, said shells including a water space between them along the sides and between the tops of the shells, a longitudinal heating tube contained in said inner shell, a burner adjacent the bottom of said shell and arranged to heat said tube, said tube being connected at its lower end to the lower end of said water jacket and having its upper end extending adjacent the top of the other shell, :1 flueextending through both of said shells, a bafile for causing the products of combustion to rise above the flue and then descend and an auxiliary flue extending through said shells adjacent the upper end of said combustion chamber.

3. In combination an outer shell, an inner shell forming a combustion chamber therein, said shells including a water spac'ebetween them, a longitudinal heating coil extending from the bottom of said water space. passin through said inner shell and extendlng a jacent the top of the outer shell, a burner at the lower end of said combustion chamber, said burner arranged to heat said tube, a flue adjacent the bottom of said combustion chamber, said flue extending through both of said shells, an inclined channel extending around the inner shell and having its liowermost side at the bottom of the smoke 4. In combination an outer shell, an inner shell secured at its lower end to said outer shell and forming acombustion chamber, said shells including a water space between them. a heating tube passing lengthwise through said inner shell, said tube connecting the bottom of the water space with the top thereof, a smoke flue passing through both of said shells, an inclined channel extending around the inner shell and having its lowermost side adjacent the bottom of said flue, and a baflle for causing an upward and return. draft from the bottom of the combustion chamber to the flue.

5. In combination, a straight cylindrical outer shell having a closed top, a straight cylindrical inner shell having a closed top, said inner shell being of less length than said outer shell, said shells being secured together at their lower ends and forming a Water space at top and sides between them, agas burner in said inner shell, a flue near the bottom of said shells, communicating with the space in said inner shell and leading the products of combustion to the outside of both shells and a batfie shutting ofi direct passage of the products of combustion from said burner with said flue, said bafile being attached below said flue and terminating adjacent the top'of the inner shell and causing the products of combustion to rise in said inner shell and then pass over said battle to pass out at said flue.

In Witness whereof, I hereunto subscribe my name this 16th day ofJuly A. D. 1915.

J OHN MARTENS.- 

